HomeMy WebLinkAboutOrdinance 999ORDINANCE NO. 999
BEING AN ORDINANCE AMENDING ORDINANCE NO. 853, CITY CODE OF 1977,
AND PERTAINING TO OTHER NUISANCE CHARACTERISTICS
The City Council of the City of Columbia Heights does ordain:
Section 1: Section 9.117(9) of Ordinance No. 853, City Code of 1977,
passed June 21, 1977, which reads as follows, to-wit:
"9.117(9) Other Nuisance Characteristics
No noise, odors, vibration, smoke, air pollution or dangerous
wastes shall be created that are offensive or dangerous to the
public health and safety.
The following are hereby established as the governing limits in
the determination of offensive nuisance characteristics:
(~) Noise
i)
Maximum governing noise limitations measured at
property line: ,
OCTAVE BANDS
CENTERED ON
SOUND LEVELS IN DECIBELS
Residential District Non-Residential
63 H ~ 59 70
125 H g 54 66
250 H g 50 62
500 H g 45 59
1000 H g 40 55
2000 H g 36 51
4000 H M 33 48
8000 H g 33 48
ii) References
The following documents shall govern definitions,
methods and other matters relating to sound and noise;
said documents, copies of which are on file in the
office of the City Clerk, are herein incorporated by
reference and made a part hereof:
American National Standards Institute
ANSI
ANSI
ANSI
ANSI
ANSI
Sl.1 Acoustic terminology
S1.4 Specifications of general purpose
sound level meters
S1.5 Preferred frequencies for acoustical
measurements
S1.8 Reference quantities for acoustical levels
Sl.13 Methods for measurement of sound
pressure levels
2) Environmental Protection A~ency
EPA Levels Document - Sound levels requisite to
protect the public health and welfare in the environment.
3) International Standard Organization
ISO/R 1999 - 1966
iii)
Acoustics - assessment of noise exposure during
work for hearing conservation purposes.
As a method of screening for probable non-compliance
the following levels are established as primary levels,
the exceeding of which shall be cited as in violation
of this Ordinance, and requiring abatement:
During the hours of 7:00 A.M. and 10:00 P.M.
Zone Average Sound Level
Residential $5 dBA
Commercial 65 dBA
Industrial 75 dBA
At all other times:
Residential 45 dBA
Commercial 50 dBA
Industrial 70 dBA
Ail measurements to be made at the lot line with an ANSI S1.4
Type 2 meter or better, set for slow damping and a-weighted
response and used according to ANSI standard S1.13 methods.
iv)
If the sound measured is impulsive, staccato, or contains
prominent pure tones, as defined and measured according to
ANSI Standards and the EPA levels document, the levels of
(c) above shall be lowered in all cases by 5 decibels,
a-weighted, and those of (a) above, by $ decibels in each
octave band.
(b)
Odors: (Measured at the property line) Table 111 (Odor Thresholds)
in Chapter 5, "Air Pollution Manual" copy-right 1951 by Manufacturin~
Chemists Association, Inc. Washington D.C.
Vibration: Any vibration discernable to the human sense of feeling
for three (3) minutes or more duration in any one hour and any
vibration producing an acceleration of more than 0.1g., or shall
result in any combination of amplitudes and frequencies beyond the
"safe" range of Table 7, U.S. Bureau of Mines, Bulletin "Quarry
Blasting" on any structure.
(~)
Smoke: Any emission of visible smoke of a shade equal to or
greater than No. 2 on the Ringlemann Smoke Chart, as published
by the U.S. Bureau of Mines, except that visible grey smoke of a
shade darker than No. 2 on said chart may be emitted for not more
than two minutes in any 30 minute period.
9..1.17
(e)
Air Pollution: (Fly ash, dust, fumes, vapors, gasses, etc.)
No e~ission which can cause any damage to health, animals, or
vegetation or other forms of property or which can cause any
excessive soiling at any point, and in no event any emission
of any solid or liquid particles in concentrations exceeding
0.85 lbs. per 1,000 lbs. of gasses shall be permitted. Measure-
ment to be made at any convenient point along the stack. In the
case of fuel burning equipment an adjustment of the gasses to 12
percent C02 content will be made. In no case shall more than 15
percent of the total dust measured before entering the dust col-
lecting device be emitted into the atmosphere."
is herewith amended to read as follows:
Other Nuisance Characteristics
No noise, odors, vibration, smoke, air pollution or dangerous wastes
shall be created that are offensive or dangerous to the public health
and safety.
The following are hereby established as the governing limits in the
determination of offensive nuisance characteristics:
(a) Noise
(1) Definitions
i) General
Words and phrases defined in this section have, when used
in this ordinance, the meanings given below. Any other
word or phrase used in this ordinance, and defined in
regulations of the Minnesota Pollution Control Agency Noise
Pollution Control Section, NPC-1 and NPC-4, has the
meaning given in those regulations.
Air circulation device means a mechanism designed and
used for the controlled flow of air used in ventilation,
cooling, or conditioning, including, but not limited to,
central and window air conditioning units.
iii)
L10 means the sound level, expressed in decibels (dBA)
which is exceeded 10 percent of the time for a one-hour
period, as measured by a sound level meter having
characteristics as specified in the latest standards,
S1.4, of the American National Standards Institute.
L50 means the sound level similarly expressed and measured
which is exceeded 50 percent of the time for a one-hour
period.
v)
Person means an individual, firm, partnership, corporation,
trustee, 'association, the state and its agencies and
subdivisions, or any body of persons whether incorporated
or not. With respect to acts prohibited or required herein,
"person" shall include employees and licensees.
vi) Stationary means not moving.
(2)
Maximum Noise Levels at Point of Reception
No person shall operate or cause or permit to be operated,
any source of noise as to create a noise level exceeding
the limit specified below for the receiving zoning district
category when measured at or within the property line of
the receiving land use.
Zoning Districts
Day Night
(7:00 a.m. - 10:00 p.m.) (10:00 p.m. - 7:00 a.m.)
LIO L50 LiO L50
Residential 65 60 55 50
Commercial
70 65 70 65
Industrial 80 75 80 75
(3)
Maximum Noise Levels for Stationary Sources of Noise
No person shall operate or cause to be operated any of the
following enumerated stationary sources of noise in excess
of the limits specified below when measured at the property
line of the property upon which the source of noise is
located:
Air Circulation Devices
Day
(7:00 a.m. - 10:00 p.m.)
Night
(10:00 p.m. - 7:00 a.m.)
Zoning Districts
Residential 60 50
Commercial 65 65
Industrial 75 75
(4)
Measurement Procedure
All noise measurements to be made with an ANSI S1.4 Type 2
~eter or better, set for slow damping and a-weighted response
and used according to ANSI standard S1.13 methods.
(b) Odors: (Measured at the property line) Table 111 (Odor Thresholds)
in Chapter 5, "Air Pollution Manual" copy-right 1951 by Manufacturing
; Chemists Association, Inc. Washington D.C.
(c)
Vibration: Any vibration discernable to the human sense of feeling
for three (3) minutes or more duration in any one hour and any
vibration producing an acceleration of more than 0.1g., or shall
result in any combination of amplitudes and frequencies beyond the
"safe" range of Table 7, U.S. Bureau of Mines, Bulletin "Quarry
Blasting" on any structure.
(d) Smoke: Any emission of visible smoke of a shade equal to or
greater than No. 2 on the Ringlemann Smoke Chart, as published
by the U.S. Bureau of Mines, except that visible grey smoke of a
shade darker than No. 2 on said chart may be emitted for not more
than two minutes in any 30 minute period.
(e)
Air Pollution: (Fly ash, dust, fumes, vapors, gasses, etc.)
No emission which can cause any damage to health, animals, or
vegetation or other forms of property or which can cause any
excessive soiling at any point, and in no event any emission
of any solid or liquid particles in concentrations exceeding
0.85 lbs. per 1,000 lbs. of gasses shall be permitted. Measure-
ment to be made at any convenient point along the stack. In the
case of fuel burning equipment an adjustment of the gasses to 12
percent C02 content will be made. In no case shall more than 15
percent of the total dust measured before entering the dust
collecting device be emitted into the atmosphere.
Section 2:
This ordinance shall be in full fOrce and effect from and
after thirty (30) days after its passage.
First reading:
Second reading:
Date of passage:
May 10, 1982
May 24, 1982
May 24, 1982
Offered by: Norberg
Seconded by: Hov]and
Roll call: AIl ayes
Bruce G awroc i, ayor
-Anne Student, Secret~C~-r~y
to the Council